Finding the Fourth Proportional to 56,632.50, 78,152.85 and 31,486.86

Step by Step Solution

1. Step 1: Write the proportion equation
   56,632.50 : 78,152.85 = 31,486.86 : x
2. Step 2: Convert to fraction form
   56,632.50/78,152.85 = 31,486.86/x
3. Step 3: Cross multiply
   56,632.50x = 78,152.85 × 31,486.86
4. Step 4: Simplify right side
   56,632.50x = 2,460,787,846.55
5. Step 5: Solve for x
   x = 2,460,787,846.55/56,632.50
6. Step 6: Final answer
   x = 43,451.87